PT - JOURNAL ARTICLE ED - , TI - Similar proportions of patients developed pressure ulcers on alternating pressure overlays and alternating pressure mattresses AID - 10.1136/ebn.10.1.22 DP - 2007 Jan 01 TA - Evidence Based Nursing PG - 22--22 VI - 10 IP - 1 4099 - http://ebn.bmj.com/content/10/1/22.short 4100 - http://ebn.bmj.com/content/10/1/22.full SO - Evid Based Nurs2007 Jan 01; 10